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marfrit eff6fb5b29 Phase 0: campaign skeleton, research question pending

Spun off 2026-05-03 from the closed-without-patch
kwin_overlay_subsurface campaign (its phase8_handover.md is
the predecessor). The candidate research question is whether
running an X11 session on PineTab2 reproduces, eliminates, or
transforms the drop-inversion phenomenon that motivated the
predecessor — but the framing is provisional and awaits
operator confirmation before Phase 1 lock.

phase0_findings.md is the substrate doc:
- Predecessor close-out summary (three reasons no patch
  landed; replicate-baseline-first lesson).
- What stays valid from the predecessor (Phase 1 scanout
  archaeology, Phase 2-prime KWin Wayland source-read which
  does NOT transfer to X11, Δ_present-46ms reproducible
  side-finding which is directly testable under X11,
  measurement infrastructure with WAYLAND_DEBUG-specific
  parts that don't transfer).
- Current ohm state (carry-over predecessor tooling, governor
  pin, baloo disabled, kwin-fourier still installed).
- Provisional research question with three plausible
  outcomes (α/β/γ) and four alternate framings the operator
  may have in mind that this question doesn't cover.
- Working-assumption out-of-scope list (no patches, no MRs,
  no Δ_present chase yet).
- Four pre-question Phase 0 deliverables that are unblocked
  regardless of framing: ohm state snapshot, X11-path
  inventory, X11 measurement-tool inventory, A1
  Wayland-baseline rep on this campaign's session for future
  comparison anchor.

worklist.md tracks Phase 0 only. Phase 1 lock awaits the
research question. Discipline carry-overs from
kwin_overlay_subsurface listed (replicate baseline first;
phase discipline; non-upstreaming default; memory
persistence at close).

README.md status banner: Phase 0 in progress, research
question pending operator confirmation.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-03 06:38:24 +00:00

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Work items — x11-session-research

Phase 0 — substrate + research question framing

Status: IN PROGRESS. Substrate doc landed (phase0_findings.md). Research question is provisional, awaits operator confirmation. Pre-question Phase 0 deliverables listed below are unblocked.

Predecessor close-out summarised. Substrate doc (phase0_findings.md) lists what stays valid from kwin_overlay_subsurface, what's specific to Wayland and doesn't transfer, and three plausible outcome shapes (α/β/γ) for the candidate research question.
Operator confirms the research question. Three candidate framings + four alternates are listed in phase0_findings.md § "Research question (provisional)". Pick one (or correct the framing) before Phase 1.
State snapshot of ohm under current Plasma Wayland — the campaign-start before photo. Unattended-tractable.
Inventory of available X11 paths on ohm: installed packages, SDDM-advertised sessions, alternate WMs, XWayland availability. Read-only.
Inventory of measurement instruments that work under X11. xtrace, frame-timing tooling, perf on Xorg PID, etc. Read-only.
A1 baseline: 1× kwin_timing_nodebug-equivalent run on current Plasma Wayland session, captured into phase0_evidence/wayland_baseline_rep1/. Same-session anchor for any future X11 comparison.

Phase 1 — locked research question + binding cells

Pending operator confirmation of the Phase 0 question. Phase 1 lock will produce phase1_lock.md with binding cells specific to whichever framing is locked.

Phase 2-onwards

Pending.

Discipline carry-overs from `kwin_overlay_subsurface`

Replicate the baseline first — per feedback_replicate_baseline_first.md. Phase 0 task "A1 baseline" exists specifically because of this lesson; do not skip it.
Phase discipline — no patches before source-read is documented. Re-scoping must be honest about deferral target.
Non-upstreaming default — bug reports + MRs are explicit operator-tasked decisions.
Memory persistence rule — when this campaign reaches its diagnostic terminal state (success or honest closure), update project_campaign_overview.md and add any new feedback memory worth carrying forward to the next campaign.

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